linux-kernel - [PATCH 1/1] arm64: dts: imx93-9x9-qsb: add I3C overlay file

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Message-Id: <20240905221020.2159230-1-Frank.Li@nxp.com>
Date: Thu,  5 Sep 2024 18:10:19 -0400
From: Frank Li <Frank.Li@....com>
To: Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	imx@...ts.linux.dev (open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE),
	linux-arm-kernel@...ts.infradead.org (moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE),
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
	linux-kernel@...r.kernel.org (open list)
Cc: imx@...ts.linux.dev
Subject: [PATCH 1/1] arm64: dts: imx93-9x9-qsb: add I3C overlay file

Add an overlay file to enable I3C support on the i.MX93, replacing I2C1
with I3C. I3C is compatible with I2C, but it has not yet been enabled in
arm64's defconfig. This overlay allows users to conveniently utilize I3C
on the imx93-9x9-qsb platform until I3C and its driver become more mature
and ready for full switch to I3C.

Signed-off-by: Frank Li <Frank.Li@....com>
---
 arch/arm64/boot/dts/freescale/Makefile        |  4 +
 .../boot/dts/freescale/imx93-9x9-qsb-i3c.dtso | 73 +++++++++++++++++++
 2 files changed, 77 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx93-9x9-qsb-i3c.dtso

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 9d3df8b218a2e..032f07adc0c53 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -240,6 +240,10 @@ dtb-$(CONFIG_ARCH_MXC) += imx8qxp-mek.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8qxp-tqma8xqp-mba8xx.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8ulp-evk.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx93-9x9-qsb.dtb
+
+imx93-9x9-qsb-i3c-dtbs += imx93-9x9-qsb.dtb imx93-9x9-qsb-i3c.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx93-9x9-qsb-i3c.dtb
+
 dtb-$(CONFIG_ARCH_MXC) += imx93-11x11-evk.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx93-14x14-evk.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx93-kontron-bl-osm-s.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx93-9x9-qsb-i3c.dtso b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb-i3c.dtso
new file mode 100644
index 0000000000000..94d562fa8077d
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb-i3c.dtso
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 NXP
+ */
+
+#include <dt-bindings/clock/imx93-clock.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/i3c/i3c.h>
+#include <dt-bindings/usb/pd.h>
+
+#include "imx93-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+&lpi2c1 {
+	status = "disabled";
+};
+
+&i3c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i3c1>;
+	#address-cells = <3>;
+	#size-cells = <0>;
+	i2c-scl-hz = <400000>;
+	status = "okay";
+
+	tcpc@50 {
+		compatible = "nxp,ptn5110", "tcpci";
+		reg = <0x50 0x00 (I2C_FM | I2C_NO_FILTER_LOW_FREQUENCY)>;
+		interrupt-parent = <&gpio3>;
+		interrupts = <26 IRQ_TYPE_LEVEL_LOW>;
+
+		connector {
+			compatible = "usb-c-connector";
+			label = "USB-C";
+			power-role = "dual";
+			data-role = "dual";
+			try-power-role = "sink";
+			source-pdos = <PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)>;
+			sink-pdos = <PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)
+				     PDO_VAR(5000, 20000, 3000)>;
+			op-sink-microwatt = <15000000>;
+			self-powered;
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+
+					typec1_dr_sw: endpoint {
+						remote-endpoint = <&usb1_drd_sw>;
+					};
+				};
+			};
+		};
+	};
+};
+
+&usb1_drd_sw {
+	remote-endpoint = <&typec1_dr_sw>;
+};
+
+&iomuxc {
+	pinctrl_i3c1: i3c1grp {
+		fsl,pins = <
+			MX93_PAD_I2C1_SCL__I3C1_SCL	0x40000186
+			MX93_PAD_I2C1_SDA__I3C1_SDA	0x40000186
+		>;
+	};
+};
-- 
2.34.1